The correct answer is increasing the time it took immigrants to gain the right to vote.
The Naturalization Act of 1790 weakened support for Democratic-Republicans by increasing the time it took immigrants to gain the right to vote.
The Naturalization Act of 1790 or Nationality Act restricted citizenship to a foreign free white people that had lived in the United States territory for two previous years. The Act did not consider women, salves, and servants. Black and Asian people were not considered too. Racial requirements for citizenship came years later. The Naturalization Act of 1790 weakened support for Democratic-Republicans by increasing the time it took immigrants to gain the right to vote.
The other options of the question were, b) making it illegal for a noncitizen to criticize the government, c) giving the president the power to imprision political opponents, and d) giving the president the power to send opponents out of the country.